136465987 has 8 divisors (see below), whose sum is σ = 165135456. Its totient is φ = 110090112.

The previous prime is 136465963. The next prime is 136465991. The reversal of 136465987 is 789564631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136465987 - 2⁷ = 136465859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136465987.

It is not an unprimeable number, because it can be changed into a prime (136465907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573268 + ... + 573505.

It is an arithmetic number, because the mean of its divisors is an integer number (20641932).

Almost surely, 2^136465987 is an apocalyptic number.

136465987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

136465987 is a deficient number, since it is larger than the sum of its proper divisors (28669469).

136465987 is a wasteful number, since it uses less digits than its factorization.

136465987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146797.

The product of its digits is 1088640, while the sum is 49.

The square root of 136465987 is about 11681.8657328357. The cubic root of 136465987 is about 514.8429935816.

The spelling of 136465987 in words is "one hundred thirty-six million, four hundred sixty-five thousand, nine hundred eighty-seven".